[MacPorts] #17374: lftp-3.7.3 updated to 3.7.6

[MacPorts]

#17374: lftp-3.7.3 updated to 3.7.6
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 Reporter:  yunzheng.hu@…          |       Owner:  macports-tickets@…                   
     Type:  enhancement            |      Status:  new                                  
 Priority:  Normal                 |   Milestone:  Port Updates                         
Component:  ports                  |     Version:  1.6.0                                
 Keywords:  lftp 3.7.3 3.7.6       |        Port:  lftp                                 
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 lftp is now updated to 3.7.6.

 attached is the patch for the Portfile, tested on Mac OS X 10.5.5.

 Some changes to the Portfile besides the version bump:

   - removed MACOSX_DEPLOYMENT_TARGET=10.4 as it does not seem to be
 necessary anymore.
   - patch-lib_poll.in.h.diff can be deleted, it is not needed anymore.
   - updated the "tls" description.
   - removed old non working mirrors.

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Ticket URL: <http://trac.macports.org/ticket/17374>
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